he'll campaign alongside his running mate paul ryan in central virginia. president obama will be in northern virginia tomorrow. >> the candidates kept things civil during last night's debate in denver. they were still pointed, though, in criticizing each other's policies and plans. the president went after mitt romney on how he plans to pay for his tax cuts. mitt romney used vice president joe biden's own words in describing the middle class's struggles. >> you think by closing looph e loopholes and deductions for the well-to-do, somehow you will not end up picking up the tab, then governor romney's plan may work for you. but i think math, common sense, and our history shows us that's not a recipe for job growth. >> under the president's policies, middle income americans have been buried. they're just being crushed. middle income americans have seen their income come down by $4,300. this is a tax in and of itself. i'll call it the economy tax. it's been crushing. >> earlier in the week, vice president biden had said the middle class has been buried for the